extract common relay initialization func (#392)

bridges/relays/ethereum/src/main.rs

@@ -35,7 +35,7 @@ use headers_relay::sync::TargetTransactionMode;
 use hex_literal::hex;
 use instances::{BridgeInstance, Kovan, RialtoPoA};
 use parity_crypto::publickey::{KeyPair, Secret};
-use relay_utils::metrics::MetricsParams;
+use relay_utils::{initialize::initialize_relay, metrics::MetricsParams};
 use sp_core::crypto::Pair;
 use substrate_sync_loop::SubstrateSyncParams;
 
@@ -43,10 +43,10 @@ use headers_relay::sync::HeadersSyncParams;
 use relay_ethereum_client::{ConnectionParams as EthereumConnectionParams, SigningParams as EthereumSigningParams};
 use relay_rialto_client::SigningParams as RialtoSigningParams;
 use relay_substrate_client::ConnectionParams as SubstrateConnectionParams;
-use std::{io::Write, sync::Arc};
+use std::sync::Arc;
 
 fn main() {
-	initialize();
+	initialize_relay();
 
 	let yaml = clap::load_yaml!("cli.yml");
 	let matches = clap::App::from_yaml(yaml).get_matches();
@@ -118,43 +118,6 @@ fn main() {
 	}
 }
 
-fn initialize() {
-	let mut builder = env_logger::Builder::new();
-
-	let filters = match std::env::var("RUST_LOG") {
-		Ok(env_filters) => format!("bridge=info,{}", env_filters),
-		Err(_) => "bridge=info".into(),
-	};
-
-	builder.parse_filters(&filters);
-	builder.format(move |buf, record| {
-		writeln!(buf, "{}", {
-			let timestamp = time::OffsetDateTime::now_local().format("%Y-%m-%d %H:%M:%S %z");
-			if cfg!(windows) {
-				format!("{} {} {} {}", timestamp, record.level(), record.target(), record.args())
-			} else {
-				use ansi_term::Colour as Color;
-				let log_level = match record.level() {
-					log::Level::Error => Color::Fixed(9).bold().paint(record.level().to_string()),
-					log::Level::Warn => Color::Fixed(11).bold().paint(record.level().to_string()),
-					log::Level::Info => Color::Fixed(10).paint(record.level().to_string()),
-					log::Level::Debug => Color::Fixed(14).paint(record.level().to_string()),
-					log::Level::Trace => Color::Fixed(12).paint(record.level().to_string()),
-				};
-				format!(
-					"{} {} {} {}",
-					Color::Fixed(8).bold().paint(timestamp),
-					log_level,
-					Color::Fixed(8).paint(record.target()),
-					record.args()
-				)
-			}
-		})
-	});
-
-	builder.init();
-}
-
 fn ethereum_connection_params(matches: &clap::ArgMatches) -> Result<EthereumConnectionParams, String> {
 	let mut params = EthereumConnectionParams::default();
 	if let Some(eth_host) = matches.value_of("eth-host") {

bridges/relays/substrate/Cargo.toml

@@ -8,15 +8,19 @@ license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 [dependencies]
 async-std = "1.6.2"
 async-trait = "0.1.41"
-bp-rialto = { path = "../../primitives/rialto" }
 codec = { package = "parity-scale-codec", version = "1.3.4" }
 futures = "0.3.5"
-headers-relay = { path = "../headers-relay" }
 log = "0.4.11"
-messages-relay = { path = "../messages-relay" }
 paste = "1.0"
+sp-runtime = "2.0"
+structopt = "0.3"
+
+# Bridge dependencies
+
+bp-rialto = { path = "../../primitives/rialto" }
+headers-relay = { path = "../headers-relay" }
+messages-relay = { path = "../messages-relay" }
 relay-millau-client = { path = "../millau-client" }
 relay-rialto-client = { path = "../rialto-client" }
 relay-substrate-client = { path = "../substrate-client" }
-sp-runtime = "2.0"
-structopt = "0.3"
+relay-utils = { path = "../utils" }

bridges/relays/substrate/src/main.rs

@@ -20,6 +20,7 @@
 
 use relay_rialto_client::SigningParams as RialtoSigningParams;
 use relay_substrate_client::ConnectionParams;
+use relay_utils::initialize::initialize_relay;
 
 /// Millau node client.
 pub type MillauClient = relay_substrate_client::Client<relay_millau_client::Millau>;
@@ -30,6 +31,8 @@ mod cli;
 mod millau_headers_to_rialto;
 
 fn main() {
+	initialize_relay();
+
 	let result = async_std::task::block_on(run_command(cli::parse_args()));
 	if let Err(error) = result {
 		log::error!(target: "bridge", "Failed to start relay: {}", error);
@@ -58,7 +61,7 @@ async fn run_command(command: cli::Command) -> Result<(), String> {
 				rialto_sign.rialto_signer_password.as_deref(),
 			)
 			.map_err(|e| format!("Failed to parse rialto-signer: {:?}", e))?;
-			millau_headers_to_rialto::run(millau_client, rialto_client, rialto_sign)
+			millau_headers_to_rialto::run(millau_client, rialto_client, rialto_sign);
 		}
 	}
 

bridges/relays/utils/Cargo.toml

@@ -6,11 +6,14 @@ edition = "2018"
 license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 
 [dependencies]
+ansi_term = "0.12"
 async-std = "1.6.5"
 backoff = "0.2"
+env_logger = "0.7.0"
 futures = "0.3.5"
 log = "0.4.11"
 sysinfo = "0.15"
+time = "0.2"
 
 # Substrate dependencies
 

bridges/relays/utils/src/initialize.rs

@@ -0,0 +1,57 @@
+// Copyright 2019-2020 Parity Technologies (UK) Ltd.
+// This file is part of Parity Bridges Common.
+
+// Parity Bridges Common is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity Bridges Common is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity Bridges Common.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Relayer initialization functions.
+
+use std::io::Write;
+
+/// Initialize relay environment.
+pub fn initialize_relay() {
+	let mut builder = env_logger::Builder::new();
+
+	let filters = match std::env::var("RUST_LOG") {
+		Ok(env_filters) => format!("bridge=info,{}", env_filters),
+		Err(_) => "bridge=info".into(),
+	};
+
+	builder.parse_filters(&filters);
+	builder.format(move |buf, record| {
+		writeln!(buf, "{}", {
+			let timestamp = time::OffsetDateTime::now_local().format("%Y-%m-%d %H:%M:%S %z");
+			if cfg!(windows) {
+				format!("{} {} {} {}", timestamp, record.level(), record.target(), record.args())
+			} else {
+				use ansi_term::Colour as Color;
+				let log_level = match record.level() {
+					log::Level::Error => Color::Fixed(9).bold().paint(record.level().to_string()),
+					log::Level::Warn => Color::Fixed(11).bold().paint(record.level().to_string()),
+					log::Level::Info => Color::Fixed(10).paint(record.level().to_string()),
+					log::Level::Debug => Color::Fixed(14).paint(record.level().to_string()),
+					log::Level::Trace => Color::Fixed(12).paint(record.level().to_string()),
+				};
+				format!(
+					"{} {} {} {}",
+					Color::Fixed(8).bold().paint(timestamp),
+					log_level,
+					Color::Fixed(8).paint(record.target()),
+					record.args()
+				)
+			}
+		})
+	});
+
+	builder.init();
+}

bridges/relays/utils/src/lib.rs

@@ -27,6 +27,7 @@ pub const MAX_BACKOFF_INTERVAL: Duration = Duration::from_secs(60);
 /// reconnection again.
 pub const CONNECTION_ERROR_DELAY: Duration = Duration::from_secs(10);
 
+pub mod initialize;
 pub mod metrics;
 
 /// Macro that returns (client, Err(error)) tuple from function if result is Err(error).